Cellular phone case with hall ic driving shielding magnet

ABSTRACT

The present invention relates to a cellular phone case with a hall IC driving shielding magnet, and an object of the present invention is to provide a cellular phone case with a hall IC driving shielding magnet that a corresponding cellular phone is automatically operated simultaneously with opening and closing the cellular phone case by incorporating a yoke and a permanent magnet having specific structures in the cellular phone case to increase user convenience.

TECHNICAL FIELD

The present invention relates to a cellular phone case with a hall ICdriving shielding magnet, and more particularly, to a cellular phonecase with a hall IC driving shielding magnet in which a permanent magnetwith a yoke for controlling magnetic force which is integrally providedtherein is incorporated in a cellular phone case, to automaticallyoperate a corresponding cellular phone as a hall IC in the cellularphone is driven at the time of opening and closing the cellular phonecase.

BACKGROUND ART

In general, as the size of a liquid crystal display of a cellular phone(mobile communication terminal) such as a smart phone and a tablet PCincreases, various forms of cellular phone cases are manufactured inorder to protect a screen and an exterior of the cellular phone to bemounted on the corresponding cellular phone.

Among them, representatively, a wallet form of cellular phone case ismost widely used, which is made of leather or artificial leather tocover front and rear surfaces and one surface of a correspondingcellular phone, and expose a screen of the corresponding cellular phonewhile a front surface part is selectively opened and closed.

However, since the aforementioned cellular phone case in the related artdoes not have a separate function which interworks with the cellularphone in addition to functions to protect the screen and the exterior ofthe cellular phone and provide an aesthetic design, there is a limit inproviding additional conveniences to a user through the cellular phonecase.

That is, if a function to operate the corresponding smart phone in linkwith the corresponding smart phone automatically is added to thecellular phone case that is mounted in the mobile communication terminalsuch as the smart phone or the tablet PC to protect a product,convenience of the user may be significantly increased.

DISCLOSURE Technical Problem

Accordingly, the present invention is contrived to solve the problems inthe related art and an object of the present invention is to provide acellular phone case with a hall IC driving shielding magnet in which ayoke and a permanent magnet having a specific structure are incorporatedin a cellular phone case to automatically operate a correspondingcellular phone simultaneously with opening and closing the cellularphone case, thereby increasing convenience of a user.

Technical Solution

In order to achieve the above object, the present invention provides acellular phone case with a hall IC driving shielding magnet that ismounted in a cellular phone in such a manner to cover a front surfaceand a rear surface, and one side surface of the cellular phone toprotect an exterior of the corresponding cellular phone, in which ashielding magnet implemented through a permanent magnet and a yoke isconfigured to be incorporated at a point of a front surface part of thecellular phone case corresponding to a hall IC incorporated in thecellular phone.

Preferably, a pole of the shielding magnet sealed through the yoke,magnetic force shielding is shown in the range of 20 to 96% and in anopened pole not interfered by the yoke, strengthened magnetic force isshown in the range of 105 to 180%, as compared with Eigen surface Gaussof the corresponding permanent magnet.

More preferably, the permanent magnet has a rectangular parallelepipedshape, and the yoke has a quadrangular plate shape or the rectangularparallelepiped shape corresponding to the permanent magnet, or arectangular parallelepiped shape of which the top is opened.

Further, the permanent magnet has a cylindrical shape, and the yoke hasa disk shape or the cylindrical shape corresponding to the permanentmagnet or a cylindrical shape of which the top is opened.

Advantageous Effects

According to the present invention configured as described above, whilea hall IC is incorporated, which applies a sensing signal for operatinga device in a mobile communication terminal such as a smart phone or atablet PC, a shielding magnet having a specific structure, which is usedto drive the hall IC is incorporated in a cellular phone case, and as aresult, a corresponding cellular phone is automatically operatedsimultaneously with opening and closing the cellular phone case, therebyincreasing convenience of a user.

Further, as a shielding magnet configured as a yoke and a permanentmagnet having a specific structure is adopted, there is an effect that afunction to drive the hall IC of the cellular phone can be implementedby a small magnet and there is also an effect that misoperation of asensor which may occur if a front surface part of the cellular phonecase is bent back to a rear surface part can be prevented.

DESCRIPTION OF DRAWINGS

FIGS. 1 a to 1 c are diagrams illustrating a flow of a magnetic field ofa general permanent magnet and a permanent magnet in which a yoke iscombined.

FIG. 2 is a perspective view illustrating an exterior of a cellularphone case with a hall IC driving shielding magnet according to thepresent invention. FIGS. 3 a and 3 b are diagrams illustrating oneexample of the permanent magnet and the yoke of the shielding magnetapplied to the cellular phone case with the hall IC driving shieldingmagnet according to the present invention.

FIGS. 4 a and 4 b are diagrams illustrating another example of thepermanent magnet and the yoke of the shielding magnet applied to thecellular phone case with the hall IC driving shielding magnet accordingto the present invention.

FIGS. 5 a to 5 c are diagrams illustrating various embodiments of theshielding magnet applied to the cellular phone case with the hall ICdriving shielding magnet according to the present invention.

FIGS. 6 a and 6 b are cross-sectional views illustrating a use state ofthe cellular phones case with the hall IC driving shielding magnetaccording to the present invention.

BEST MODE

Herein, the present invention configured as described above will bedescribed in detail with reference to the drawings.

FIG. 2 is a perspective view illustrating an exterior of a cellularphone case with a hall IC driving shielding magnet according to thepresent invention. FIGS. 3 a and 3 b are diagrams illustrating oneexample of the permanent magnet and the yoke of the shielding magnetapplied to the cellular phone case with the hall IC driving shieldingmagnet according to the present invention, FIGS. 4 a and 4 b arediagrams illustrating another example of the permanent magnet and theyoke of the shielding magnet applied to the cellular phone case with thehall IC driving shielding magnet according to the present invention,FIGS. 5 a to 5 c are diagrams illustrating various embodiments of theshielding magnet applied to the cellular phone case with the hall ICdriving shielding magnet according to the present invention, and FIGS. 6a and 6 b are cross-sectional views illustrating a use state of thecellular phones case with the hall IC driving shielding magnet accordingto the present invention.

The cellular phone case with the hall IC driving shielding magnetaccording to the present invention is implemented to automaticallyoperate a corresponding cellular phone 100 by sensing opening andclosing states of a cellular phone case 10 simultaneously with openingand closing the cellular phone case 10 by incorporating a shieldingmagnet 20 having a specific structure, which is constituted by apermanent magnet 22 and a yoke 24 in the cellular phone case 10.

The cellular phone case with the hall IC driving shielding magnetaccording to the present invention is applied to a cellular phone casemade of leather or artificial leather, which is constituted by a frontsurface part 12 and a rear surface part 14, and a side surface part 16in such a manner to cover a front surface and a rear surface, and oneside surface of the cellular phone 100.

To this end, a hall IC (hall effect sensor) 110 that generates apredetermined sensing signal by magnetic force having a predeterminedmagnitude is configured to be incorporated in various mobilecommunication terminals 100 such as a smart phone or a tablet PC, whilethe shielding magnet 20 implemented by the permanent magnet 22 and theyoke 24 is configured to be incorporated on the front surface part 12side of the cellular phone case 10 at a point corresponding to the hallIC 110 in the cellular phone 100.

As well known, a magnetic force line is formed in the permanent magnetin a fully opened state as illustrated in FIG. 1 a, but when thepermanent magnet is sealed by a metal yoke having high magneticpermeability, magnetic force lines illustrated in FIGS. 1 b and 1 c areshown according to a shape of the yoke.

That is, in a magnetic field of the permanent magnet, attraction forceand repulsion force that react depending on metal are differently shownand levels thereof vary depending on permeability of the metal. Whenhigh-permeability metal gets closer to the permanent magnet, a flow ofthe magnetic field is changed and when the metal gets closer to thepermanent magnet while the shape and the thickness of metal areappropriately designed, directionality of the magnetic field throughinduction of the flow of the magnetic field may be changed.

Therefore, according to levels of strengthening and shielding ofmagnetic force, which are required, the material, the thickness, theshape, and the like of the yoke are changed and the yoke may beintegrally combined with the permanent magnet, and as a result, astrengthening rate and shielding rate of the corresponding shieldingmagnet may be changed.

Herein, the shielding magnet 20 applied to the cellular phone case 10according to the present invention may be designed in such a manner thatin a pole sealed through the yoke 24 having the specific structure,magnetic force shielding is shown in the range of approximately 20 to96% and in an opened pole not interfered by the yoke 24, strengthenedmagnetic force is shown in the range of approximately 105 to 180%, ascompared with Eigen surface Gauss of the corresponding permanent magnet22.

The material of the yoke 24 is selected by considering the permeabilityof metal and the thickness and the shape of the yoke may be designedaccording to the magnetic force and the size of the permanent magnet 22.

In the exemplary embodiment of the present invention, when the permanentmagnet 22 has a rectangular parallelepiped shape, the yoke 24 may have aquadrangular plate shape or the rectangular parallelepiped shapecorresponding to the permanent magnet, or a rectangular parallelepipedshape of which the top is opened (see FIGS. 3 a and 3 b).

Further, when the permanent magnet 22 has a cylindrical shape, the yoke24 may have a disk shape or the cylindrical shape corresponding to thepermanent magnet or a cylindrical shape of which the top is opened (seeFIGS. 4 a and 4 b).

That is, as illustrated in FIGS. 5 a to 5 c, the yoke 24 may beconfigured to seal one surface or a side surface, or three surfaces ofthe permanent magnet 22 having various shapes and a material thereof ispreferably implemented by soft ferrite magnetic metal having highpermeability.

Subsequently, an operation of the present invention configured asdescribed above will be described below with reference to the drawings.

Various types of mobile communication terminals 100 such as variouscellular phones including a smart phone, a tablet PC, and the like aremounted in the cellular phone case with the hall IC driving shieldingmagnet according to the present invention, in which the hall IC 110 thatgenerates a sensing signal for operating the corresponding device isconfigured to be incorporated in a substrate of the mobile communicationterminal 100.

Therefore, as the user opens the front surface part 12 of the cellularphone case 10 in which the mobile communication terminal 100 such as thecellular phone is mounted, a magnetic force signal from the permanentmagnet constituting the shielding magnet 20 incorporated in the cellularphone case 10 is detected through the hall IC 110, and as a result, thecorresponding cellular phone 100 is controlled to be automaticallyoperated.

Thereafter, when the corresponding mobile communication terminal 100 isused, in the case where a user applies external force to allow the frontsurface part 12 of the cellular phone case 10 to be bent and overlappedwith the rear surface part 14, the magnetic force of the permanentmagnet 22 is not applied to the hall IC 110 through the yoke 24, and asa result, an arbitrary misoperation of the shielding magnet 20 may beprevented.

Further, when the cellular phone case 10 is closed by returning thefront surface part 12 of the cellular phone case 10 to an originalposition thereof again, the corresponding cellular phone is controlledto be automatically turned off while the magnetic force signal from thepermanent magnet 22 of the shielding magnet 20 is detected through thehall IC 110 incorporated in the corresponding mobile communicationterminal 100.

That is, the shielding magnet 20 provided on a front surface of thecellular phone case according to the present invention provides asufficient magnetic force signal on the front surface side of the mobilecommunication terminal 100 and as the magnetic force signal is decreasedthrough the yoke 24 on the rear surface side, a misoperation of the hallIC 110 may be prevented.

Meanwhile, although modified examples other than contents disclosed inthe present invention appear, the modified examples should notindividually be understood from the technical spirit and prospect of thepresent invention and the modified examples are included in the appendedclaims, of course.

DESCRIPTION OF MAIN REFERENCE NUMERALS OF DRAWINGS

10: Cellular phone case

12: Front surface part

14: Rear surface part

16: Side surface part

20: Shielding magnet

22: Permanent magnet

24: Yoke

100: Mobile communication terminal (cellular phone)

110: Hall IC

1. A cellular phone case with a hall IC driving shielding magnet that ismounted in a cellular phone in such a manner to cover a front surfaceand a rear surface, and one side surface of the cellular phone toprotect an exterior of the corresponding cellular phone, wherein ashielding magnet implemented through a permanent magnet and a yoke isconfigured to be incorporated at a point of a front surface part of thecellular phone case corresponding to a hall IC incorporated in thecellular phone.
 2. The cellular phone case of claim 1, wherein in a poleof the shielding magnet sealed through the yoke, magnetic forceshielding is shown in the range of 20 to 96% and in an opened pole notinterfered by the yoke, strengthened magnetic force is shown in therange of 105 to 180%, as compared with Eigen surface Gauss of thecorresponding permanent magnet.
 3. The cellular phone case of claim 2,wherein the permanent magnet has a rectangular parallelepiped shape, andthe yoke has a quadrangular plate shape or the rectangularparallelepiped shape corresponding to the permanent magnet, or arectangular parallelepiped shape of which the top is opened.
 4. Thecellular phone case of claim 2, wherein the permanent magnet has acylindrical shape, and the yoke has a disk shape or the cylindricalshape corresponding to the permanent magnet or a cylindrical shape ofwhich the top is opened.
 5. The cellular phone case of claim 1, whereinthe permanent magnet has a rectangular parallelepiped shape, and theyoke has a quadrangular plate shape or the rectangular parallelepipedshape corresponding to the permanent magnet, or a rectangularparallelepiped shape of which the top is opened.
 6. The cellular phonecase of claim 1, wherein the permanent magnet has a cylindrical shape,and the yoke has a disk shape or the cylindrical shape corresponding tothe permanent magnet or a cylindrical shape of which the top is opened.7. The cellular phone case of claim 1, wherein the yoke is configured toseal one surface or a side surface, or three surfaces of the permanentmagnet.
 8. The cellular phone case of claim 1, wherein a material of theyoke is implemented by soft ferrite magnetic metal having highpermeability.